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Canon scanner CanoScan D1250U2F User Manual

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Page 61

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Glossary
Glossary Contents
Index
Crop
The action of selecting part of an image. The Crop button on the ScanGear
CS-U main window lets you select part of a preview image and re-preview
or scan only that selected part.
Curve chart
The graph displayed in the Tone tab settings for the Auto Tone, Contrast/
Brightness, Gamma, Histogram, and Special Tone Curves features. This
graph describes the relationship between the color characteristics of the
previewed image and the available feature settings.
Default...

Page 62

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Glossary
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Index
Grayscale
Grayscale refers to a single-channel image made up of 256 shades of gray,
ranging from white to black, that represent all tones in an image.
Halftoning
A method of simulating intermediate tones in black-and-white images by
varying the patterns of dots and lines. Halftoning is usually used for
photographs, or other images with intermediate tones, scanned in Black
and White.
Histogram
The Histogram displays the distribution of bright and dark pixels for ea\
ch...

Page 63

63
Glossary
Glossary Contents
Index
OCR (Optical Character Recognition)
OCR software converts text images into actual text characters readable by a
word-processing program or similar application. The Text Enhanced scan
setting sharpens the black and white contrast to assist in the accurate
recognition of characters in OCR software.
Pixel
An acronym for picture element A pixel is the smallest element used to
create a screen image. It can contain up to 42 bits of color information.
Preview Area
The area...

Page 64

64
Glossary
Glossary Contents
Index
Threshold
In a black-and-white image, the threshold is the point at which a gray pixel
is determined to become either black or white. The Threshold slider is on
the Halftone sheet. Adjust the Threshold value when you are scanning a
grayscale or halftone original with the Black and White setting.
Tone sheet
The Tone sheet contains tools that let you adjust and correct the image
tone. The Tone sheet tools include Auto Tone, Contrast/Brightness, Gamma,
Histogram, and...

Page 65

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Glossary Contents
Index
Index 

Page 66

66
Index
Glossary Contents
IndexA
Advanced Mode button ... 8
Advanced Mode Main Window ... 10  ,23
All Reset button ...  34
Auto Crop ...  59
Auto Crop Button ...  14
Auto Tone ...  22
Auto Tone Adjustment ...  59
Auto Tone Button ...  33
B
Bits and Bit Depth ...  59
Black-point ...  39
Brightness ...  35 ,59
C
Calibration ...  31 ,60
Canon ColorGear Color Matching ... 57  ,60
Channel ...  35 ,36  ,38  ,40
Clear Button ...  12 ,15
Close Box ...  12
Color Channels ...  60
Color Management Settings ......

Page 67

67
Index
Glossary Contents
IndexF
Film ... 16 ,27
Film Type ...  20 ,28
Filter Processing ...  28
Full Platen ...  61
G
Gamma ... 37
Gamma Button ...  33
Gamma Curve ...  61
Gamma Sheet ...  36
General Settings ...  52
Grayscale ...  62
H
Halftone Sheet ...  42
Halftoning ...  62
Height ...  21
Help Button ...  14
Histogram ...  62
Histogram Button ...  33
Histogram Sheet ...  38
I
Image Source ... 16 ,27
Image Type ...  17
L
Load Button ...  34
M
Magazine-Reduce Moiré ...  22 ,62
Main Sheet ...  23...

Page 68

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Index
Glossary Contents
IndexP
Paper Size ... 21 ,27
Pixel ...  63
Platen ...  16 ,27
Preferences Settings ...  55
Preview Area ...  12 ,63
Preview Button ...  12 ,15
Print Size ...  26
Scale ...  26
W idth and Height ...  26
Q
Quick Preview ... 31
R
Reduce Dust and Scratches ...  29  ,63
Reset ...  39
Reset button ...  34
Resolution ...  20 ,63
Rotate Left Button ...  14
Rotate Right Button ...  14
Rulers Button ...  14
S
Save Button ... 34
Scan Button ...  12 ,15
Scanner Gamma ...  37
Scanners and...

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Glossary Contents
IndexU
Unsharp Mask ... 28 ,64
W
White-point ...  39
Width ...  21
Window Resize Corner ...  12
Z
Zoom Tool Button ... 13 
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